Use the list form of the ENFREQ macro together with the execute form of the macro for applications that require reentrant code. The list form of the macro constructs a parameter list that the execute form of the macro can use or modify.
The list form of the ENFREQ macro is written as follows:
| Syntax | Description |
|---|---|
| name | name: Symbol. Begin name in column 1. |
| ␢ | One or more blanks must precede ENFREQ. |
| ENFREQ | |
| ␢ | One or more blanks must follow ENFREQ. |
| ACTION=LISTEN | |
| ,CODE=event code | event code: Decimal digit. |
| ,MASEXIT=No | Default: MASEXIT=NO |
| ,MASEXIT=YES | |
| ,FLTRBLK=filter block addr | filter block addr: the address of the filter block |
| ,QUAL=qualifier | qualifier: A constant value |
| ,QMASK=qmask keywords | qmask keywords: BYTE1, BYTE2, BYTE3, BYTE4, ALL, NONE. |
| Default: QMASK=NONE | |
| ,BITQUAL=bitqual | bitqual: name of a 32-byte field, hexadecimal numeric value (X'xxx'), |
| ,BITCOMPARE=SUBSET | Default: BITCOMPARE=SUBSET |
| ,BITCOMPARE=INTERSECT | |
| ,BITCOMPARE=EQUAL | |
| ,SRBEXIT=exitrtn addr | exitrtn addr: A-type address. |
| ,EXIT=exitrtn addr | exitrtn addr: A-type address. |
| ,PARM=parm addr | parm addr: A-type address. |
| ,PARM=parm data | parm data: a fullword of data |
| ,EOT=NO | Default: EOT=NO. |
| ,EOT=YES | |
| ,EOM=NO | Default: EOM=NO. |
| ,EOM=YES | |
| ,PLISTVER=2 | Default: Version implied by keywords |
| ,PLISTVER=3 | |
| ,PLISTVER=MAX | |
| ,RELATED=(value) | value: Is any text. |
| ,XSYS=NO | Default: XSYS=NO. |
| ,XSYS=YES | |
| ,MF=L | |
The parameters are explained under the standard form of the ENFREQ macro with ACTION=LISTEN, with the following exceptions: